High performance rocker shaft kit for VW Type 1 rocker assemblies. This rocker shaft kit replaces the original VW rocker assembly springs and spacers with a floating solid spacer and durable rocker shaft. This kit protects rocker arms from excessive side to side movement under high RPMs which can damage rocker arms. Consider adding a set of swivel feet adjusters for ultimate performance out of your stock rockers.Rocker Shaft Kit for Air Cooled Beetle